They're tricky to install, but that's because they're a lot stiffer than the original hand-inserted foam, which is probably what you and I want. The originals don't even come across as an effective hacker due to their softness. If you make a larger move with the stabilizer detached, the originals will crush like a loaf of bread. They really serve their purpose. But with a heavily pivoted axle it starts to push those out of the way too, which is why I recommend pairing them with hockey pucks inβ¦